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4.3.2 Different half-lives of radioactive isotopes
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Half-life and decay

Half-life and decay

Graph comparing a steep activity decay for a short-half-life isotope with a gradual decay for a long-half-life isotope The half-life of a radioactive isotope is the time taken for its activity or count-rate to fall to half its starting value. Half-lives range from fractions of a second to billions of years.

4.3.2 Different half-lives of radioactive isotopes Lesson

  1. GCSE
  2. /Physics
  3. /4.3.2 Different half-lives of radioactive isotopes

Step-by-step lessons on AQA GCSE Physics 4.3.2 Different half-lives of radioactive isotopes. Each one builds up to exam-style questions. Build a strong grip on equations, units and Key Stage 3 fundamentals before tackling the more demanding topics like electromagnetism, the particle model of matter and space physics.

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